<template>
    <div class="app-container">
      <el-form label-width="120px">
        <el-form-item label="信息描述">
          <el-tag type="info">excel模版说明</el-tag>
          <el-tag>
            <i class="el-icon-download"/>
            <a :href="'/static/01.xlsx'">点击下载模版</a>
          </el-tag>
  
        </el-form-item>
  
        <el-form-item label="选择Excel">
          <el-upload
            ref="upload"
            :auto-upload="false"
            :on-success="fileUploadSuccess"
            :on-error="fileUploadError"
            :disabled="importBtnDisabled"
            :limit="1"
            :action="BASE_API+'/eduservice/subject/addSubject'"
            name="file"
            accept="application/vnd.ms-excel">
            <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
            <el-button
              :loading="loading"
              style="margin-left: 10px;"
              size="small"
              type="success"
              @click="submitUpload">上传到服务器</el-button>
          </el-upload>
        </el-form-item>
      </el-form>
    </div>
  </template>

  <script>
     export default{
        data(){
            return{
                loading:false,//如果是true，表示上传到服务器
                importBtnDisabled:false,//是否禁用上传按钮
                BASE_API:process.env.BASE_API,

            }
        },
        methods:{
          
            //点击按钮上传文件到接口里面
        submitUpload() {
            this.importBtnDisabled = true
            this.loading = true
            // js: document.getElementById("upload").submit()
            this.$refs.upload.submit()
        },
        //上传成功
        fileUploadSuccess(response) {
            //提示信息
            this.loading = false
            this.$message({
                type: 'success',
                message: '添加课程分类成功'
            })
            //跳转课程分类列表
            //路由跳转
            this.$router.push({path:'/subject/list'})
        },
        //上传失败
        fileUploadError() {
            this.loading = false
            this.$message({
                type: 'error',
                message: '添加课程分类失败'
            })
        }
    }
}

    
  </script>

  <style>
</style>